Table 5. The comparison of ROC curves among miR-421 and tumor markers for Pre.

ROC curves comparison	CA153		CA211		CA50
	Z	p	Z	p	Z	p
miR-421	2.211	0.027	4.414	<0.0001	1.997	0.0458

Notes.

ROC curves comparisons were analyzed by using MedCalc statistical software with statistical significance at the level of p < 0.05.